Frost dates by ZIP code: The nearest NOAA stations to your ZIP, 1991-2020 normals
Enter a five-digit ZIP code. PlainClimate finds its center (Census Bureau 2024) and the five nearest NOAA stations with frost dates, and shows each station's last spring and first autumn 32°F dates with its distance and elevation.
Frost dates near ZIP 75901
The USDA's 2023 Plant Hardiness Zone Map puts ZIP 75901 in zone 9a (the coldest night of a typical year: 20 to 25°F).
The nearest station, Lufkin, TX, is 8 miles from the ZIP's center: its last spring frost comes after March 11 in half of years and after April 4 in one year in ten. By the USDA's method its plant hardiness zone is 9a.
| Station | Distance | Elevation | Last frost (median) | 1 in 10 after | First frost (median) | Hardiness zone |
|---|---|---|---|---|---|---|
| Lufkin, TXLufkin Angelina County Airport | 8 mi | 288 ft | March 11 | April 4 | November 15 | 9a |
| Lufkin (11 mi NW), TX | 17 mi | 350 ft | March 19 | April 9 | November 10 | – |
| Nacogdoches, TX | 22 mi | 435 ft | March 13 | April 6 | November 17 | 8b |
| Groveton, TX | 31 mi | 350 ft | March 2 | March 24 | November 26 | – |
| San Augustine, TX | 34 mi | 295 ft | March 18 | April 8 | November 13 | – |
Frost comes later in spring at higher and colder stations and earlier in low, open ground: prefer a station at a similar elevation to yours. Hardiness zone in the table: the USDA's rule (the average of each year's coldest night, 1991-2020) applied to the station's own record.
Every frost threshold at Lufkin
NOAA publishes the dates for several temperatures and odds. A 30% spring date means a 3-in-10 chance of a later frost (the convention almanacs use); 50% is the median; 10% the cautious date.
| Threshold | Spring, 10% | Spring, 30% | Spring, 50% | Spring, 90% | Autumn, 50% | Autumn, 10% |
|---|---|---|---|---|---|---|
| 36°F (light frost) | April 16 | April 5 | March 28 | March 4 | November 4 | October 22 |
| 32°F | April 4 | March 22 | March 11 | February 17 | November 15 | October 30 |
| 28°F (hard freeze) | March 17 | March 5 | February 25 | January 27 | November 28 | November 6 |
| 24°F | March 6 | February 18 | February 2 | December 31 | December 21 | November 22 |
Source: NOAA NCEI 1991-2020 annual normals; ZIP centers: Census Bureau 2024 Gazetteer; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026. Autumn 10%: one year in ten has its first frost before this date.